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A method to improve the quality of lettuce based on fr and uva

A lettuce quality technology, applied in botany equipment and methods, gardening methods, horticulture, etc., to achieve the effects of easy promotion, good economic and social benefits, and high nutritional content

Active Publication Date: 2021-09-21
深圳市霍迪科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, lettuce multi-layer facility cultivation is mainly based on LED lights, which are divided into full-spectrum LED supplementary light and red and blue LED supplementary light. Full-spectrum LED lights contain not only red and blue lights that plants need most, but also some green light to promote Spectrum of plant physiological growth, there is no report on the effect of UV-A and FR synergistic supplementary light on the growth quality, antioxidant capacity and nutrient absorption of lettuce

Method used

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  • A method to improve the quality of lettuce based on fr and uva
  • A method to improve the quality of lettuce based on fr and uva
  • A method to improve the quality of lettuce based on fr and uva

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The acquisition of embodiment 1 lettuce plant

[0025] Put the seeds of rouge lettuce and butter red lettuce on the moist sponge block respectively, and carry out sponge block seedling cultivation. After 20 days, select the lettuce seedlings with the same growth and transplant them to the planting board, plant 20 plants on each board, slow down the seedlings for two days after transplanting, and then carry out Lighting treatment.

Embodiment 2

[0026] Embodiment 2 Light treatment

[0027] Divide the rouge lettuce seedlings and butter red lettuce seedlings after slow seedlings in Example 1 into four groups, and carry out light treatment, with red and white 2:3 as the basic light, and the total light intensity is 250 μmol m -2 ·s -1 , the photoperiod is 10h / d. One group of rouge lettuce seedlings and butter red lettuce seedlings is the control (CK) without supplementary light, and the other three groups are respectively treated with the following supplementary light treatments: UVA (10W·m -2 ), FR(15W·m -2 ), UVA (10W·m -2 )+FR(15W·m -2 ). Samples were taken for analysis after 13 days of treatment.

Embodiment 3

[0028] The mensuration of embodiment 3 lettuce fresh weight and dry weight

[0029] The fresh weight and dry weight of the shoots and underground parts of each group of lettuce in Example 2 were measured, and the results are shown in Table 1.

[0030] Table 1 Fresh weight and dry weight of above-ground and underground parts of each group of lettuce

[0031]

[0032] It can be seen from Table 1 that the fresh weight of the whole plant of rouge lettuce increased by 12.12%-44.48% under the three supplementary light treatments, and the dry weight of the whole plant increased by 22.09%-48.41% under the various supplementary light treatments. UVA+FR supplementary light significantly increased the fresh weight and dry weight of whole plant of buttered red lettuce by 14.16% and 13.06%, respectively.

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Abstract

The invention discloses a method for improving the quality of lettuce based on FR and UVA, which belongs to the field of vegetable cultivation. The specific steps are that the photoperiod is 10h / d and the total light intensity is 250μmol·m ‑2 ·s ‑1 The red and white light is the basic light, the ratio of the red and white light is 2:3, and the light intensity is 10W·m ‑2 380±10nmUVA and light intensity of 15W·m ‑2 The 735±10nm FR is supplementary light for synergistic irradiation of lettuce seedlings. Supplementing UVA can improve the antioxidant and nutrient content of lettuce. Compared with FR supplementary light, FR+UV supplementary light has a significant increase in biomass (fresh weight, dry weight) and higher nutrient content. Compared with the existing Compared with technology, the invention has low cost, simple operation method, easy popularization, can be directly applied to production, and has better economic and social benefits.

Description

technical field [0001] The invention relates to the field of vegetable cultivation, in particular to a method for improving the quality of lettuce based on FR and UVA. Background technique [0002] Leaf lettuce (Lactuca sativa), commonly known as lettuce, is an annual or biennial herbaceous plant with obovate leaves. Lettuce has a long history of being introduced to China. It is rich in various nutrients needed by the human body, has a good taste, and has strong ornamental value. It is very popular and has become the main hydroponic leaf vegetable in facility agriculture. It has been cultivated in recent years. The area expanded rapidly. [0003] The effects of far-red light FR on plants are mainly manifested in two aspects, one is to provide radiant energy for plant photosynthesis, and the other is to regulate many physiological processes in the whole life cycle of plants as a signal. Supplementation with FR LEDs increased the growth parameters of lettuce such as total bi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G7/04A01G22/15
CPCA01G7/045A01G22/15
Inventor 刘厚诚何锐李雅旻
Owner 深圳市霍迪科技有限公司